Best downhill performance was at the top of the developers' list of priorities. The new flagship of the Swiss bike pioneer has 170 millimetres of travel at the front, 160 at the rear and a very robust-looking carbon frame. It has a mullet construction, with a large wheel at the front and a small wheel at the rear. The four frame sizes are designed to fit people from 155 to 195 centimeters. The Uproc6 is available in three colors.

• Battery attachment: For a particularly secure attachment, the fully integrated power tube battery (625 Wh) is attached to the frame with a screw, which guarantees a firm, vibration-free fit.
• Mullet bike: The combination of a 29-inch front wheel and 27.5-inch rear wheel gives the Uproc6 the best rollover behavior and optimum grip thanks to the larger front wheel, paired with high agility and riding dynamics thanks to the more compact rear wheel.
• Carbon frame: The coordinated stiffness of the main frame and rear triangle ensures precise and dynamic handling.

Statement by: Silas Furrer, Bike Product Manager, Flyer AG

Equipment

The tested model corresponds to the middle of three equipment variants. The new Fox 38 Performance Grip is used at the front and a Fox DPX2 Performance at the rear. The gears and brakes both come from Shimano's XT groupset. The reliable "H 1700 Spline 30" wheels from DT Swiss are fitted with downhill tires from Maxxis. A puncture-proof combo.

Motor / battery

Brand: Bosch Performance Line CX/ Bosch Power Tube 625
Power: 250 watts
Torque: 85 Newton meters
Battery capacity: 625 watt hours

Processing & details

The four-bar linkage has large bearings and a solid carbon rocker arm. In general, the frame looks very robust. All cables are routed inside through an opening on the left-hand side. The battery compartment is also located there, resulting in a clean look on the drive side. This look is rounded off by the fact that the large main bearing of the swingarm is concealed. It can only be accessed from the opposite side. The transitions between the individual frame elements are beautifully designed and harmonize with the simple colour scheme. The Flyer logo is discreetly attached to the head tube and chainstays. So much modesty is not necessary on this top bike. The model name is beautifully integrated into the frame. The paintwork and the entire frame give the impression of top quality. This is also reflected in the purchase price of around 9000 francs.

On the flat

E-MTBs usually take a little time to get used to, as in addition to the geometry and suspension, the motor also has a strong influence on the riding experience. You adjust the Uproc6 to your needs, sit on it and you immediately feel comfortable. Yes, that's a hackneyed phrase used by test editors, but it's true here. The riding position is rather upright and comfortable. The bike is nice and agile and handles like a potent enduro bike. Despite the long wheelbase, it pulls nimbly through corners.

Up the mountain

The climbing characteristics are good, regardless of whether you are pedaling uphill quickly or in a relaxed manner. Thanks to the well-balanced geometry, this is even possible at a crawling pace. You don't have to worry about root carpets and stone fields on the climbs - thanks to the good rear end, you just glide over them. Only when it gets so steep that even pushing becomes tiring does the rather soft shock reach its limits. Light riders are well advised to pump it a little firmer than usual. Otherwise, in combination with the mullet construction, there is a lack of pressure on the front. If the setup is too soft, the shock will then dive deep due to the rear weight, which means that the front wheel will come towards you and you will often hit the pedals on rough surfaces.

Downhill

Whether it's rough trails or downhill tracks, this Flyer won't be fazed. No matter how it bangs and rumbles, the suspension absorbs every bump - even when you think: "Now it's getting critical." The 160 millimetres at the rear feel like much more, the riding experience is very similar to that of a downhill bike. Another hackneyed phrase, but it gets to the point: the bike sticks to the ground and has plenty of travel.

But it's not just the suspension that impresses, the steering behavior does too. As long as you have the speed under control, you won't go off course. This is thanks to the torsionally stiff Fox 38. The Uproc6 can be efficiently pushed into tight berms at high speed and also out of them without rushing through the suspension travel. On the other hand, it's amazing how smoothly the Flyer can be maneuvered around tight hairpins.

You don't get much feedback from the rear. It feels like a bike with a coil shock, but you can still feel where the rear wheel is. When jumping, the landing is better than the take-off, which lacks a bit of pop. In the air, the bike is easy to control, even if you are unintentionally rear- or front-heavy.

Conclusion

Mullet bikes are not everyone's cup of tea; there are slight disadvantages on the climbs, but this design is more than positive on the descents. And as mentioned at the beginning, the Uproc6 was developed with the best downhill performance in mind. Flyer has achieved this goal. The good downhill qualities cover a wide range of applications. Whether alpine tours or a detour to the bike park, you can do it all with a grin on your face. Flyer skillfully combines high quality with very good riding characteristics. With this bike, the Swiss manufacturer has nothing to hide from the competition.

Recommendation

The Uproc6 is particularly suitable for those who don't want to compromise on downhill performance. Of course, you can master almost any terrain with this e-MTB. However, the rougher the surface, the more it shows its capabilities. Experienced bikers in particular will appreciate this.

Specifications

Manufacturer/distributor

www.flyer-bikes.com